According to community discussions on Reddit and Narutopedia , this episode is essential because it establishes the power ceiling of the series and gives the protagonists their first real taste of mortality.
: Facing an "elite" opponent, Kakashi is forced to reveal his Sharingan , a legendary dōjutsu that Sasuke recognizes as a unique trait of his own clan. This is the first time viewers see Kakashi's true power as the "Copy Ninja".
[Spoilers] Boruto: Naruto Next Generations - Episode 7 discussion Naruto Episode 7
Are you planning to watch the rest of the arc, or
: The tension peaks when Zabuza, a missing-nin from the Hidden Mist, makes a dramatic entrance by hurling his massive sword, the Kubikiribōchō, at the group. According to community discussions on Reddit and Narutopedia
“That besides the whole Konoha ninja exams was the best part of Naruto.” Reddit · r/anime · 8 years ago
: Tazuna, the bridge builder, reveals that he lied about the mission's difficulty because his country is too poor to afford a high-rank escort. He is being targeted by Gato, a corrupt tycoon trying to stop the bridge's completion to maintain his monopoly over the land. [Spoilers] Boruto: Naruto Next Generations - Episode 7
: The episode introduces a darker tone as Sasuke experiences a panic attack from the sheer bloodlust of the two jōnin, while Naruto must battle his own fear to protect Tazuna.